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>DataparkSearch Engine 4.54: Reference manual</TH
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><DIV
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><H1
><A
NAME="DOINGSEARCH"
></A
>Chapter 8. Searching documents</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>8.1. <A
HREF="dpsearch-doingsearch.en.html#SEARCH"
>Using search front-ends</A
></DT
><DT
>8.2. <A
HREF="dpsearch-mod_dpsearch.en.html"
><TT
CLASS="LITERAL"
>mod_dpsearch</TT
> module for Apache httpd</A
></DT
><DT
>8.3. <A
HREF="dpsearch-templates.en.html"
>How to write search result templates</A
></DT
><DT
>8.4. <A
HREF="dpsearch-html.en.html"
>Designing search.html</A
></DT
><DT
>8.5. <A
HREF="dpsearch-rel.en.html"
>Relevance</A
></DT
><DT
>8.6. <A
HREF="dpsearch-track.en.html"
>Search queries tracking</A
></DT
><DT
>8.7. <A
HREF="dpsearch-srcache.en.html"
>Search results cache</A
></DT
><DT
>8.8. <A
HREF="dpsearch-fuzzy.en.html"
>Fuzzy search</A
></DT
></DL
></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="SEARCH"
>8.1. Using search front-ends</A
></H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-PERFORM"
>8.1.1. Performing search</A
></H2
><P
>Open your preferred front-end in Web browser:
		<PRE
CLASS="PROGRAMLISTING"
>http://your.web.server/path/to/search.cgi</PRE
></P
><P
>To find something just type words you want to
find and press SUBMIT button. For example: <KBD
CLASS="USERINPUT"
>mysql
odbc</KBD
>. <SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> will find all documents that
contain word <CODE
CLASS="OPTION"
>mysql</CODE
> and/or word <CODE
CLASS="OPTION"
>odbc</CODE
>. Best documents having bigger
weights will be displayed first.</P
><P
>To find a phrase, simple enclose it in quotas. For example:
<KBD
CLASS="USERINPUT"
>&quot;uncontrollable sphere&quot;</KBD
>.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH_PARAMS"
>8.1.2. Search parameters</A
></H2
><A
NAME="AEN4905"
></A
><P
><SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> front-ends support the following
parameters given in CGI query string. You may use them in HTML form on
search page.</P
><DIV
CLASS="TABLE"
><A
NAME="SEARCH-PARAMS"
></A
><P
><B
>Table 8-1. Available search parameters</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><TBODY
><TR
><TD
>q</TD
><TD
>text parameter with search query</TD
></TR
><TR
><TD
>vq</TD
><TD
>text parameter with search query in the <SPAN
CLASS="APPLICATION"
>Verity Query Language</SPAN
> (prefix variant), see <A
HREF="dpsearch-doingsearch.en.html#VQL"
>Section 8.1.8</A
>&#62;. To use this parameter, you need to leave empty the q parameter.</TD
></TR
><TR
><TD
>s</TD
><TD
>characters sequence, specify results sorting order.
Small caps specify ascendant sorting, upper caps - descendant.
Following characters can be used: <TT
CLASS="LITERAL"
>R</TT
> or <TT
CLASS="LITERAL"
>r</TT
> - for sorting by relevance,
<TT
CLASS="LITERAL"
>P</TT
> or <TT
CLASS="LITERAL"
>p</TT
> - for sorting by PopularityRank,
<TT
CLASS="LITERAL"
>I</TT
> or <TT
CLASS="LITERAL"
>i</TT
> - for sorting by Importance (multiplication of relevance and PopularityRank),
<TT
CLASS="LITERAL"
>A</TT
> or <TT
CLASS="LITERAL"
>a</TT
> - for sorting by sum of relevance and PopularityRank,
<TT
CLASS="LITERAL"
>D</TT
> or <TT
CLASS="LITERAL"
>d</TT
> - for sorting by last modified date.
Default value: <TT
CLASS="LITERAL"
>RP</TT
>.
                                                </TD
></TR
><TR
><TD
>ps</TD
><TD
>page size,
number of search results displayed on one page, 20 by default. Maximum
page size is 100. This value does not allow passing very big page
sizes to avoid server overload and might be changed with MAX_PS
definition in <TT
CLASS="FILENAME"
>search.c</TT
>.&#13;</TD
></TR
><TR
><TD
>np</TD
><TD
>page number, starting by 0, 0 by default (first page)</TD
></TR
><TR
><TD
>p</TD
><TD
>page number starting by 1. Suitable for use with OpenSearch</TD
></TR
><TR
><TD
>m</TD
><TD
>search mode. Currently "all","any", "near" and "bool" values are supported.</TD
></TR
><TR
><TD
>wm</TD
><TD
>word match. You
may use this parameter to choose word match type.	There are
"wrd", "beg", "end" and "sub" values that respectively mean whole
word, word beginning, word ending and word substring match.</TD
></TR
><TR
><TD
>t</TD
><TD
>Tag
limit. Limits search through only documents with given tag. This
parameter has the same effect with -t indexer option</TD
></TR
><TR
><TD
>c</TD
><TD
>Category
limit. Take a look into <A
HREF="dpsearch-categories.en.html"
>Section 6.2</A
>&#62; for details.</TD
></TR
><TR
><TD
>ul</TD
><TD
>URL limit, URL
substring to limit search through subsection	of database. It
supports SQL % and _  LIKE wildcards. This parameter has the same
effect with -u indexer option. If relative URL is specified
<TT
CLASS="FILENAME"
>search.cgi</TT
> inserts % signs before and after "ul"
value when compiled with SQL support. It allows to write URL substring
in HTML from to limit search, for example	&lt;OPTION
VALUE="/manual/"&gt; instead of VALUE="%/manual/%". When full URL with
schema is specified <TT
CLASS="FILENAME"
>search.cgi</TT
> adds % sign only
after this value. For example for &lt;OPTION
VALUE="http://localhost/"&gt; <TT
CLASS="FILENAME"
>search.cgi</TT
> will
pass <TT
CLASS="LITERAL"
>http://localhost/%</TT
> in SQL LIKE
comparison.
<DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
>Not supported for cache storage mode.</BLOCKQUOTE
></DIV
></TD
></TR
><TR
><TD
>wf</TD
><TD
>Weight
factors. It allows changing different document sections weights at a
search time. Should be passed in the form of hex number.	Check
the explanation below.</TD
></TR
><TR
><TD
>g</TD
><TD
>Language
limit. Language abbreviation to limit search results by url.lang
field.</TD
></TR
><TR
><TD
>tmplt</TD
><TD
>Template filename (without path).
To specify template file other standard <TT
CLASS="FILENAME"
>search.htm</TT
>.</TD
></TR
><TR
><TD
>type</TD
><TD
>Content-Type limit.
Content-type to limit search results by url.content_type field.
For cache mode storage this should be exact match. For SQL-modes it may be sql-like pattern.</TD
></TR
><TR
><TD
>sp</TD
><TD
>Words forms limit.
=1, if you need search all forms (include spelling suggestions, if aspell support is enabled) for entered words.
=0, if you need search only entered words. Default value is 1. You may switch it to 0 for faster search.</TD
></TR
><TR
><TD
>sy</TD
><TD
>Synonyms limit.
=1, if you need add synonyms for entered words.
=0, do not use synonyms. Default value is 1. You may switch it to 0 for faster search.</TD
></TR
><TR
><TD
>empty</TD
><TD
>Use limits to show results if no query words is entered (only for cache mode).
=yes, to show results from limits, if no query words is entered (default).
=no, do not show results from limits, if no query words is entered.</TD
></TR
><TR
><TD
>dt</TD
><TD
>Limit by time. Three types is supported.
				<P
>If <TT
CLASS="LITERAL"
>dt</TT
> is set to <TT
CLASS="LITERAL"
>back</TT
>,
that means you want to limit result to recent pages, and you should specify this recentness in variable <TT
CLASS="LITERAL"
>dp</TT
>.</P
>
				<P
>If <TT
CLASS="LITERAL"
>dt</TT
> is set to <TT
CLASS="LITERAL"
>er</TT
>,
that means the search will be limited to pages newer or older than date given.
Variable <CODE
CLASS="OPTION"
>dx</CODE
> is newer/older flag (1 means newer or after, -1 means older or before).
Date is specified in variables <CODE
CLASS="OPTION"
>dm, dy, dd</CODE
>.</P
>
				<P
>If <TT
CLASS="LITERAL"
>dt</TT
> is set to <TT
CLASS="LITERAL"
>range</TT
>,
that means search within given range of dates. Variables <CODE
CLASS="OPTION"
>db</CODE
> and <CODE
CLASS="OPTION"
>de</CODE
>
are used here and stands for beginning and end date.</P
>

<DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
>All times in cache mode measured in a hour precision.</BLOCKQUOTE
></DIV
>&#13;</TD
></TR
><TR
><TD
>dp</TD
><TD
>Limit by recentness, if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>back</TT
>.
It should be specified in <TT
CLASS="LITERAL"
>xxxA[yyyB[zzzC]]</TT
> format. Spaces are allowed between xxx and A and yyy and so on).
 xxx, yyy, zzz are numbers (can be negative!), A, B, C can be one of the following (the letters are the same as in
strptime/strftime functions): s - second, M - minute, h - hour, d - day, m - month, y - year. Examples:
				<PRE
CLASS="PROGRAMLISTING"
>  4h30M 	  - 2 hours and 30 minutes
  1Y6m-15d        - 1 year and six month minus 15 days
  1h-60M+1s       - 1 hour minus 60 minutes plus 1 second</PRE
></TD
></TR
><TR
><TD
>dx</TD
><TD
>is newer/older flag (1 means newer or after, -1 means older or before),
if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>er</TT
>.</TD
></TR
><TR
><TD
>dm</TD
><TD
>Month, if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>er</TT
>. 0 - January, 1 - February, ...
11 - December.</TD
></TR
><TR
><TD
>dy</TD
><TD
>Year, if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>er</TT
>. Four digits. For example, 1999 or 2001.</TD
></TR
><TR
><TD
>dd</TD
><TD
>Day, if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>er</TT
>. 1...31.</TD
></TR
><TR
><TD
>db</TD
><TD
>Beginning date, if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>range</TT
>.
Each date is string in the form dd/mm/yyyy, there dd is day, mm is month and yyyy is four-digits year.</TD
></TR
><TR
><TD
>de</TD
><TD
>End date, if <TT
CLASS="LITERAL"
>dt</TT
> value is <TT
CLASS="LITERAL"
>range</TT
>.
Each date is string in the form dd/mm/yyyy, there dd is day, mm is month and yyyy is four-digits year.</TD
></TR
></TBODY
></TABLE
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-CHANGEWEIGHT"
>8.1.3. Changing different document parts weights at search time</A
></H2
><P
>It is possible to pass <CODE
CLASS="OPTION"
>wf</CODE
> HTML form variable
to <TT
CLASS="FILENAME"
>search.cgi</TT
>. <CODE
CLASS="OPTION"
>wf</CODE
> variable represents weight
factors for specific document parts. Currently
body, title, keywords, description, url parts, crosswords as well as user
defined META and HTTP headers are supported. Take a look into
"Section" part of <TT
CLASS="FILENAME"
>indexer.conf-dist</TT
>.</P
><P
>To be able use this feature it is recommended to
set different sections IDs for different document parts in "Section"
<TT
CLASS="FILENAME"
>indexer.conf</TT
> command. Currently up to 256
different sections are supported.</P
><P
>Imagine that we have these default sections in <TT
CLASS="FILENAME"
>indexer.conf</TT
>:
		<PRE
CLASS="PROGRAMLISTING"
>  Section body        1  256
  Section title       2  128
  Section keywords    3  128
  Section description 4  128</PRE
>
		</P
><P
><CODE
CLASS="OPTION"
>wf</CODE
> value is a string of hex digits ABCD. Each
digit is a factor for corresponding section weight. The most right
digit corresponds to section 1. For the given above sections
configuration:</P
><P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D&nbsp;is&nbsp;a&nbsp;factor&nbsp;for&nbsp;section&nbsp;1&nbsp;(body)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C&nbsp;is&nbsp;a&nbsp;factor&nbsp;for&nbsp;section&nbsp;2&nbsp;(title)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B&nbsp;is&nbsp;a&nbsp;factor&nbsp;for&nbsp;section&nbsp;3&nbsp;(keywords)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A&nbsp;is&nbsp;a&nbsp;factor&nbsp;for&nbsp;section&nbsp;4&nbsp;(description)</P
><P
>Examples:</P
><P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;&nbsp;wf=0001&nbsp;will&nbsp;search&nbsp;through&nbsp;body&nbsp;only.<br>
<br>
&nbsp;&nbsp;&nbsp;wf=1110&nbsp;will&nbsp;search&nbsp;through&nbsp;title,keywords,description&nbsp;but&nbsp;not&nbsp;<br>
	through&nbsp;the&nbsp;body.<br>
<br>
&nbsp;&nbsp;&nbsp;wf=F421&nbsp;will&nbsp;search&nbsp;through:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Description&nbsp;with&nbsp;factor&nbsp;15&nbsp;&nbsp;(F&nbsp;hex)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Keywords&nbsp;with&nbsp;factor&nbsp;4<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Title&nbsp;with&nbsp;factor&nbsp;&nbsp;2<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Body&nbsp;with&nbsp;factor&nbsp;1</P
><P
>By default, if <CODE
CLASS="OPTION"
>wf</CODE
> variable is omitted in the
query, all section factors are 1, it means all sections have the same
weight. If the number of sections in <CODE
CLASS="OPTION"
>wf</CODE
> is less than the number of sections defined, then the rest sections are initialized by the value of highest section weight defined in <CODE
CLASS="OPTION"
>wf</CODE
>. E.g.:</P
><P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;&nbsp;wf=01&nbsp;will&nbsp;also&nbsp;search&nbsp;through&nbsp;body&nbsp;only.</P
><P
>If <SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> has been built with fast relevance calculation (with <CODE
CLASS="OPTION"
>--enable-rel=fast</CODE
>
option for <B
CLASS="COMMAND"
>configure</B
>), in this case, only zero and non-zero values for <CODE
CLASS="OPTION"
>wf</CODE
> variable take an effect (this allows only include/exclude
specified sections in search results).
To use full support for dynamic section weights, you need specify <CODE
CLASS="OPTION"
>--enable-rel=full</CODE
>
option for <B
CLASS="COMMAND"
>configure</B
> when configuring <SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
>.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-SCRIPTNAME"
>8.1.4. Using front-end with an shtml page</A
></H2
><P
>When using a dynamic shtml page containing SSI
that calls <TT
CLASS="FILENAME"
>search.cgi</TT
>,
i.e. <TT
CLASS="FILENAME"
>search.cgi</TT
> is not called directly as a CGI
program, it is necessary to override Apache's SCRIPT_NAME environment
attribute so that all the links on search pages lead to the dynamic
page and not to <TT
CLASS="FILENAME"
>search.cgi</TT
>.</P
><P
>For example, when a shtml page contains a line
<TT
CLASS="LITERAL"
>&lt;--#include virtual="search.cgi"&gt;</TT
>,
SCRIPT_NAME variable will still point to
<TT
CLASS="FILENAME"
>search.cgi</TT
>, but not to the shtml page.</P
><P
>To override SCRIPT_NAME variable we implemented
a DPSEARCH_SELF variable that you may add to Apache's
<TT
CLASS="FILENAME"
>httpd.conf</TT
> file. Thus
<TT
CLASS="FILENAME"
>search.cgi</TT
> will check DPSEARCH_SELF variable
first and then SCRIPT_NAME. Here is an example of using DPSEARCH_SELF
environment variable with <B
CLASS="COMMAND"
>SetEnv/PassEnv</B
> Apache's
<TT
CLASS="FILENAME"
>httpd.conf</TT
> command:</P
><P
>			<PRE
CLASS="PROGRAMLISTING"
>SetEnv DPSEARCH_SELF /path/to/search.cgi
PassEnv DPSEARCH_SELF</PRE
>
		</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-TEMPLATES"
>8.1.5. Using several templates</A
></H2
><P
>It is often required to use several templates
with the same <TT
CLASS="FILENAME"
>search.cgi</TT
>. There are actually
several ways to do it. They are given here in the order how
<TT
CLASS="FILENAME"
>search.cgi</TT
> detects template name.</P
><P
></P
><OL
TYPE="1"
><LI
><P
><TT
CLASS="FILENAME"
>search.cgi</TT
> checks environment variable DPSEARCH_TEMPLATE. So you can put a path to desired search template into this variable. </P
></LI
><LI
><P
><TT
CLASS="FILENAME"
>search.cgi</TT
> checks path info part of URL available in the PATH_INFO environment variable.
E.g. <TT
CLASS="FILENAME"
>http://localhost/cgi-bin/search.cgi/search1.html</TT
> uses <TT
CLASS="FILENAME"
>search1.htm</TT
> as its template,
and  <TT
CLASS="FILENAME"
>http://localhost/cgi-bin/search.cgi/search2.html</TT
> uses <TT
CLASS="FILENAME"
>search2.htm</TT
>, and so on.</P
></LI
><LI
><P
>					<TT
CLASS="FILENAME"
>search.cgi</TT
> also supports Apache internal redirect. It checks REDIRECT_STATUS and REDIRECT_URL environment variables. To activate this way of template usage you may add these lines in Apache <TT
CLASS="FILENAME"
>srm.conf</TT
>:

				<PRE
CLASS="PROGRAMLISTING"
>AddType text/html .zhtml
AddHandler zhtml .zhtml
Action zhtml /cgi-bin/search.cgi</PRE
>
				</P
><P
>Put
<TT
CLASS="FILENAME"
>search.cgi</TT
> into your
<TT
CLASS="FILENAME"
>/cgi-bin/</TT
> directory. Then put HTML template into
your site directory structure under any name with .zthml extension,
for example template.zhtml. Now you may open search page:
<TT
CLASS="LITERAL"
>http://www.site.com/path/to/template.zhtml</TT
> You may
use any unused extension instead of .zthml of course. </P
></LI
><LI
><P
>If the above two ways fail,
search.cgi opens a template which has the same name with the script
being executed using SCRIPT_NAME environment
variable. <TT
CLASS="FILENAME"
>search.cgi</TT
> will open a template
<TT
CLASS="FILENAME"
>ETC/search.htm</TT
>, <TT
CLASS="FILENAME"
>search1.cgi</TT
>
will open <TT
CLASS="FILENAME"
>ETC/search1.htm</TT
> and so on, where ETC is
<SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> <TT
CLASS="FILENAME"
>/etc</TT
> directory (usually
<TT
CLASS="FILENAME"
>/usr/local/dpsearch/etc</TT
>). So, you can use the
same <TT
CLASS="FILENAME"
>search.cgi</TT
> with different templates without
having to recompile it. Just create one or several hard or symbolic
links for <TT
CLASS="FILENAME"
>search.cgi</TT
> or copy it and put
corresponding search templates into /etc directory of <SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
>
installation.</P
><P
>Take a look also into Making multi-language search pages section</P
></LI
></OL
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-OPERATORS"
>8.1.6. Search operators</A
></H2
><P
>The operator <B
CLASS="COMMAND"
>allin&lt;section&gt;:</B
>,
where &lt;section&gt; is the name of a section, defined in <TT
CLASS="FILENAME"
>sections.conf</TT
> file
(or in any dpsearch's configuration file by <B
CLASS="COMMAND"
>Section</B
> command) with non-zero section number
(see <A
HREF="dpsearch-indexcmd.en.html#SECTION_CMD"
>Section 3.10.43</A
>&#62;),
that operator allows to limit the search domain for a query word by the section specified.</P
><P
>This operator differ from limiting search domain using &amp;wf= CGI-variable in a way,
that such limit is imposing only on query words specified after this operator.</P
><P
>For example, if you have the following commands in <TT
CLASS="FILENAME"
>sections.conf</TT
> file
<PRE
CLASS="PROGRAMLISTING"
>Section body 1 256
Section title 2 128
Section url 3 0 strict</PRE
>
then you can use the following operators in search query: <B
CLASS="COMMAND"
>allinbody:</B
>, <B
CLASS="COMMAND"
>allintitle:</B
> and
<B
CLASS="COMMAND"
>allinurl:</B
>.</P
><P
>For the query <KBD
CLASS="USERINPUT"
>computer allintitle: science</KBD
> it will be found the documents that contain the word
"science" in the title and the word "computer" in any document section.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-BOOL"
>8.1.7. Advanced boolean search</A
></H2
><A
NAME="AEN5145"
></A
><P
>If you want more advanced results you may use
query language. You should select "bool" search mode in the search
from.</P
><P
><SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> understands the following boolean operators:</P
><P
><KBD
CLASS="USERINPUT"
>AND</KBD
> or <KBD
CLASS="USERINPUT"
>&amp;</KBD
> - logical AND. For example,
"<KBD
CLASS="USERINPUT"
>mysql &amp; odbc</KBD
>" or "<KBD
CLASS="USERINPUT"
>mysql AND odbc</KBD
>" -
<SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> will find any URLs that contain both "mysql" and
"odbc".</P
><P
><KBD
CLASS="USERINPUT"
>NEAR</KBD
> - NEAR operator, identical to AND operator, but come true if both
words are within 16 words of each other.
For example, "<KBD
CLASS="USERINPUT"
>mysql NEAR odbc</KBD
>"  -
<SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> will find any URLs that contain both "mysql" and
"odbc" within 16 words of each other.</P
><P
><KBD
CLASS="USERINPUT"
>ANYWORD</KBD
> or <KBD
CLASS="USERINPUT"
>*</KBD
> - ANYWORD operator,
identical to AND operator, but come true if both words have any one word between and left operand have lesser position than right operand.
For example, "<KBD
CLASS="USERINPUT"
>mysql * odbc</KBD
>"  -
<SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> will find any URLs that contain both "mysql" and
"odbc" within any word between, for example, any document with "mysql via odbc" phrase.</P
><P
><KBD
CLASS="USERINPUT"
>OR</KBD
> or <KBD
CLASS="USERINPUT"
>|</KBD
> - logical OR. For example,
"<KBD
CLASS="USERINPUT"
>mysql | odbc</KBD
>" or "<KBD
CLASS="USERINPUT"
>mysql OR odbc</KBD
>" -
<SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> will find any URLs  that contain word
"mysql" or word "odbc".</P
><P
><KBD
CLASS="USERINPUT"
>NOT</KBD
> or <KBD
CLASS="USERINPUT"
>~</KBD
> - logical NOT. For example,
"<KBD
CLASS="USERINPUT"
>mysql &amp; ~ odbc</KBD
>"  or "<KBD
CLASS="USERINPUT"
>mysql AND NOT odbc</KBD
>" -
<SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
> will find URLs that contain word "mysql" and do
not contain word "odbc" at the same time. Note that ~ just excludes
given word from results. Query "~ odbc" will find nothing!</P
><P
><KBD
CLASS="USERINPUT"
>()</KBD
> - group command to compose more complex
queries. For example "(mysql | msql) &amp; ~ postgres". Query language
is simple and powerful at the same time. Just consider query as usual
boolean expression.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="VQL"
>8.1.8. The Verity Query Language, VQL</A
></H2
><P
>Only the prefix variant of the <SPAN
CLASS="APPLICATION"
>Verity Query Language</SPAN
> is supported by <SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
>.</P
><P
>Also, only the following subset of VQL operators is supported by <SPAN
CLASS="APPLICATION"
>DataparkSearch</SPAN
>:</P
><DIV
CLASS="TABLE"
><A
NAME="VQL-OPERATORS"
></A
><P
><B
>Table 8-2. VQL operators supported by DataparkSearch</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><TBODY
><TR
><TD
>&lt;ACCRUE&gt;</TD
><TD
>equal to <KBD
CLASS="USERINPUT"
>OR</KBD
> operator in boolean mode.</TD
></TR
><TR
><TD
>&lt;AND&gt;</TD
><TD
>equal to <KBD
CLASS="USERINPUT"
>AND</KBD
> operator in boolean mode.</TD
></TR
><TR
><TD
>&lt;ANY&gt;</TD
><TD
>equal to <KBD
CLASS="USERINPUT"
>OR</KBD
> operator in boolean mode.</TD
></TR
><TR
><TD
>&lt;NEAR&gt;</TD
><TD
>equal to <KBD
CLASS="USERINPUT"
>NEAR</KBD
> operator in boolean mode.</TD
></TR
><TR
><TD
>&lt;NOT&gt;</TD
><TD
>equal to <KBD
CLASS="USERINPUT"
>NOT</KBD
> operator in boolean mode.</TD
></TR
><TR
><TD
>&lt;OR&gt;</TD
><TD
>equal to <KBD
CLASS="USERINPUT"
>OR</KBD
> operator in boolean mode.</TD
></TR
><TR
><TD
>&lt;PHRASE&gt;</TD
><TD
>equal to a phrase in boolean mode.</TD
></TR
><TR
><TD
>&lt;WORD&gt;</TD
><TD
>is considered as an empty operator.</TD
></TR
></TBODY
></TABLE
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="SEARCH-EXP"
>8.1.9. How search handles expired documents</A
></H2
><P
>Expired documents are still searchable with their old content.</P
></DIV
></DIV
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